Multi-Factor Authentication (MFA) Setup for Retirees

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In any browser, log into outlook.office.com.
Click Next.
Input the phone number you would like to use to receive texts or calls as your secondary form of authentication. Choose to have Microsoft text me a code or call me and then click Next.
If you chose to have a code sent to you via text, enter it and click Next.
Click Next.
If you chose to receive a call, press pound (#) on your phone when prompted.
Click Next.
Your default authentication method will be listed on the confirmation screen, as well as the phone number you entered. Click Done.